1 ; RUN: opt < %s -indvars -S | FileCheck %s
5 ; Do a bunch of analysis and prove that the loops can use an i32 trip
6 ; count without casting.
8 ; Note that all four functions should actually be converted to
9 ; memset. However, this test case validates indvars behavior. We
10 ; don't check that phis are "folded together" because that is a job
11 ; for loop strength reduction. But indvars must remove sext, zext, and add i8.
15 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-n8:16:32"
16 target triple = "i686-pc-linux-gnu"
18 ; CHECK-LABEL: @kinds__sbytezero
22 ; CHECK-NOT: {{sext i8|zext i8|add i8|trunc}}
24 define void @kinds__sbytezero([256 x i32]* nocapture %a) nounwind {
26 %tmp46 = getelementptr [256 x i32], [256 x i32]* %a, i32 0, i32 0 ; <i32*> [#uses=1]
27 store i32 0, i32* %tmp46
30 bb: ; preds = %bb, %bb.thread
31 %i.0.reg2mem.0 = phi i8 [ -128, %bb.thread ], [ %tmp8, %bb ] ; <i8> [#uses=1]
32 %tmp8 = add i8 %i.0.reg2mem.0, 1 ; <i8> [#uses=3]
33 %tmp1 = sext i8 %tmp8 to i32 ; <i32> [#uses=1]
34 %tmp3 = add i32 %tmp1, 128 ; <i32> [#uses=1]
35 %tmp4 = getelementptr [256 x i32], [256 x i32]* %a, i32 0, i32 %tmp3 ; <i32*> [#uses=1]
36 store i32 0, i32* %tmp4
37 %0 = icmp eq i8 %tmp8, 127 ; <i1> [#uses=1]
38 br i1 %0, label %return, label %bb
44 ; CHECK-LABEL: @kinds__ubytezero
46 define void @kinds__ubytezero([256 x i32]* nocapture %a) nounwind {
48 %tmp35 = getelementptr [256 x i32], [256 x i32]* %a, i32 0, i32 0 ; <i32*> [#uses=1]
49 store i32 0, i32* %tmp35
52 bb: ; preds = %bb, %bb.thread
53 %i.0.reg2mem.0 = phi i8 [ 0, %bb.thread ], [ %tmp7, %bb ] ; <i8> [#uses=1]
54 %tmp7 = add i8 %i.0.reg2mem.0, 1 ; <i8> [#uses=3]
55 %tmp1 = zext i8 %tmp7 to i32 ; <i32> [#uses=1]
56 %tmp3 = getelementptr [256 x i32], [256 x i32]* %a, i32 0, i32 %tmp1 ; <i32*> [#uses=1]
57 store i32 0, i32* %tmp3
58 %0 = icmp eq i8 %tmp7, -1 ; <i1> [#uses=1]
59 br i1 %0, label %return, label %bb
65 define void @kinds__srangezero([21 x i32]* nocapture %a) nounwind {
69 bb: ; preds = %bb, %bb.thread
70 %i.0.reg2mem.0 = phi i8 [ -10, %bb.thread ], [ %tmp7, %bb ] ; <i8> [#uses=2]
71 %tmp12 = sext i8 %i.0.reg2mem.0 to i32 ; <i32> [#uses=1]
72 %tmp4 = add i32 %tmp12, 10 ; <i32> [#uses=1]
73 %tmp5 = getelementptr [21 x i32], [21 x i32]* %a, i32 0, i32 %tmp4 ; <i32*> [#uses=1]
74 store i32 0, i32* %tmp5
75 %tmp7 = add i8 %i.0.reg2mem.0, 1 ; <i8> [#uses=2]
76 %0 = icmp sgt i8 %tmp7, 10 ; <i1> [#uses=1]
77 br i1 %0, label %return, label %bb
83 define void @kinds__urangezero([21 x i32]* nocapture %a) nounwind {
87 bb: ; preds = %bb, %bb.thread
88 %i.0.reg2mem.0 = phi i8 [ 10, %bb.thread ], [ %tmp7, %bb ] ; <i8> [#uses=2]
89 %tmp12 = sext i8 %i.0.reg2mem.0 to i32 ; <i32> [#uses=1]
90 %tmp4 = add i32 %tmp12, -10 ; <i32> [#uses=1]
91 %tmp5 = getelementptr [21 x i32], [21 x i32]* %a, i32 0, i32 %tmp4 ; <i32*> [#uses=1]
92 store i32 0, i32* %tmp5
93 %tmp7 = add i8 %i.0.reg2mem.0, 1 ; <i8> [#uses=2]
94 %0 = icmp sgt i8 %tmp7, 30 ; <i1> [#uses=1]
95 br i1 %0, label %return, label %bb